Rotary-disk harrow.



Patented Sept. 26, I899.

. W. N. ROSE.

ROTARY DISK NARROW.

(Application filed. May 19, 1899.)

3 Sheets-Sheet (NO Model.)

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Patented Sept. 26, I899.

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ROTARY DISK NARROW.

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Patented Sept. 26,1899.

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WILLIAM N. ROSE,;OF.TEMPERANCE HALL, TENNESSEE.

ROTARY-{DISK HARROW.v

SPECIFICATION forming part of Letters Patent No. 633,908, dated September 26, 1899.

Application filed May 19, 1899. Serial No. 717,492. (No model.)

The invention has for its object to provide Improved means for reversing the harrow without the necessity of turning the harrow around.

It also has for its object to provide improved means for adjusting the two gangs relatively to the line of draft and to each other. I

It has for its further object to render the fra'meyielding or flexible to accommodate the disks'to the inequalities of the ground, and, finally, it has for its object to improve and simplify the construction and render more efficient the operatiouof this class of bar-- rows generally.- To these ends my invention consists inthe features and in the construction, arrange ment, and combination of parts hereinafter described, and particularly pointed out in the clai ms following the description, reference being had to the accompanying drawings, forminga part of this specification, wherein- Figure 1 is a top plan view of the harrow. Fig. 2 is a longitudinal sectional View of the same. Fig. 3 is a detail view illustrating the mannenof hanging the disk-gangs. Fig. 4 is a detail view of the latch for locking the tongue to the frame. Fig. 5' is a top plan view of a portion of the harrow, showing the parts in a difierent position from that shownin Fig. 1; and Fig, 6 is a diagrammatic view illustrating the action of the hand-operated lever upon the two gangs of disks.

Referring to the drawings, the numeral 1 indicates the side members of the harrowframe, each comprising a beam slightly inclined upward from its center toward its opposite ends, as shown. v.ihefextremities of the beams 1 are rounded or provided with tenons 2, and oversaid tenons are fitted cross-' barsB, provided at their opposite ends with perforations,through which the tenons loosely extend. The cross-bars are held in place on the tenons by pins 4.

Straddling the central portion of each of the beams 1- is an inverted-U-shaped yoke 5, and disposed over said yokes is a cross-beam G. Headed bolts 7 pass through the beams l, yokes 5, and beam 6 and serve as pivots about which the yokes have a limited rotary or oscillating movement. The perforations 8 inthe yokes 5", through which the bolts 7 pass, are made flaring or of a gradually-increasing diameter from the top to the bottom, whereby the yokes are permitted to oscillate freely from side to side for the purpose hereinafter explained.

' J ournaled in steel bearings in the lower ends of each of the yokes is a shaft 9, on which are mounted the disks 10. The shafts 9 are made square or angular in cross-section, excepting at those points where they are j ournaled in the yokes, and the'disks are provided centrally with correspondingly-shaped apertures, whereby they are fixed against rotation'on the shafts. Arranged on the shafts between the disks are sleeves 11, which hold the disks at fixed distances apart.

Disposed transversely on and fixed to the cross-beam 6 is an arm 12, in the opposite ends of which are secured standards 13, and in the lower forked ends of the standards are journaled rotary colters 14, which move in the line of draft and operate to cut the earth between the two gangs of disks. The standards and colters also serve to hold the har row-frame upright while the tongue'is being reversed, as will be hereinafter described.

Pivoted to one of the beams 1 is alever 15, which is disposed transversely of the harrowframe and lies beneath the arm 12. Pivotally connectedto the central portion of the lever 15 are two rods 16, which at their other ends are pivoted to lugs or projections 17 and 17, attached to the inner sides of the yokes 5. Hinged to the upper side of the lever 15 is a bell-crank-shaped latch 18, the upright or vertical portion 19 of which is adapted to engage either one of a series of notches 20, formed in theside of the arm 12, and is held in such engagement by a coiled spring 21, arranged between the end of the latch and the lever.

Pivoted to the lug or projection 17 isa rod 22, that is loosely connected at its end to one end of alever 23. The lever 23 is pivoted midway between its ends to one end of the arm 12 and at its free end is provided with a loop 24 for the purpose hereinafter described.

Pivoted to the center of the beam 6 by means of a bolt 25 is a plate 26, between the forked ends 27 of which is hinged the rear end of a draft-tongue 28. The tongue is thus free to be moved vertically and may also be turned horizontally around the bolt25 as a center. The tongue is mortised, as at 29, and pivoted in said mortised portion is a latch 30, the lower end of which is hook-shaped or curved forwardly to engage a notch or recess 31, formed centrally on the underside of each of the cross-beams The upper end of the latch 30 is connected by a link 32 to a lever 33, that is pivoted to a bracket 34, fixed on the rear end of the tongue 28. As shown, the bracket 34 is segmental in shape and is provided on its edge with a rack 35, adapted to be engaged by a spring-dog 36, of well-known construction, to hold the latch 30 in engagement with one or the other of the cross-beams 3.

Bolted to the cross-beam 6 is a seat support or standard 37, provided at its upper end with a drivers seat 38. The beam 6 is provided with a plurality of bolt-holes 39, in any one which the bolt of the seat-standard may be inserted, whereby the seat may be adjusted from one side to the other of the tongue for plowing a hillside.

The operation of my improved barrow is as follows: Vhen harrowing level ground, the shafts 9 are arranged at an angle to one another, as shown in Fig. 1 of the drawings, whereby the-disks are disposed obliquely to the line of draft, with their concave sides facing in the direction of the movement of the harrow. The disks being fixed on the shafts are incapable of any rotary movement independently of the latter, and the disks and their shafts rotate together, whereby the operation of the disks upon the soil is rendered uniform. When the side of the field is reached, instead of turning the harrow around, as is ordinarily the custom, the latch 30 is withdrawn from the recess or notch 31 in the cross-beam 3 and the tongue 28 is reversed or turned about its pivot 25 and the latch 30 locked to the opposite cross-beam. The lever 15 is next moved in the proper direction to cause the rods 16 to oscillate the yokes 5 about their pivots and reverse the two gangs of disks. It is obvious, however, that the harrow may be turned around in the usual manner at corners instead of reversing the position of the tongue 28.

In harrowing a hillside it is desirable that the disks be so arranged that they will throw the earth down hill, and to effect such an adjustment it is merely necessary to disconnect the rod 16, that is connected to the lug 17, from the lever 15 and connect it to the loop 24 of the lever 23. Then by moving the lever 15 in the proper direction the shafts 9 will be caused to assume positions parallel with each other, but diagonally to the line of draft. The tongue is reversed in the manner before described when the end of the field is reached and the lever 15 moved in the proper direction to reverse the inclination of the shafts 9 and throw the concave sides of the disks toward the direction of draft.

By arranging the disks on two independent shafts and by loosely connecting the yokes 5 to the beam 6 in the manner described the disks are enabled to accommodate themselves to the irregularities of the ground, and this result is further facilitated by loosely arranging the cross-beams 3 on tenons formed on the ends of the beams 1 in the manner shown, as the frame of the harrow is thereby rendered flexible.

Having described my invention, what I claim is- 1. In a disk harrow, the combination with the barrow-frame, of two inverted-U sliaped yokes straddling the sides of the frame, shafts journaled in the lower ends of the yokes, disks fixed on the shafts, a central beam disposed on top of the yokes, pivot-bolts passing through said beam, yokes and sides of the frame, and means for rotatably adjusting the yokes on the pivot-bolts, substantially as described.

2. In a disk harrow, the combination with the barrow-frame, of two inverted-U-shaped yokes straddling the sides of the frame, shafts journaled in the lower ends of the yokes, disks fixed on the shafts, a central beam disposed on top of the yokes, and pivot-bolts passing through said yokes and sides of the frame and loosely journaled in conical-shaped apertures formed in the beams whereby they are permitted to oscillate laterally, and means for rotatably adjusting the yokes on the pivotbolts, substantially as described.

3. In a disk harrow, the combination with the harrow-frame, of two inverted-U-shaped yokes straddling the sides of the frame, shafts journaled in the lower ends of the yokes, disks fixed on the shafts, a central beam disposed on top of the yokes, pivot-bolts passing through said beam, yokes and sides of the frame, a pivoted lever arranged transversely to the frame, two rods each attached at one end to the lever and at their other ends respectively attached to the sides of the yokes whereby the two gangs of disks may be adjusted to the line of draft, and means for looking the lever, substantially as described.

4. In a disk harrow, the combination with the harrow-frame, of two inverted-U-shaped yokes straddling the sides of the frame, shafts journaled in the lower ends of the yokes,disks fixed on the shafts, a central beam disposed on top of the yokes, pivot-bolts passing through said beam, yokes and sides of the frame, a pivoted lever arranged transversely to the frame, two rods each attached at one end to the lever and at their other ends respectively attached to the sides of the yokes whereby the two gangs of disks may be adjusted relatively to the line of draft, and a bell-crank spring-latch pivotally connected to the lever and arranged to engage a notched bar fixedon the central beam, substantially as described and for the purpose specified.

5. In a disk harrow, the combinationwith the barrow-frame provided with a central transverse central beam, of two yokes pivoted to the sides of the frame beneath the beam, shafts journaled in the lower ends of the yokes, disks fixed on the shafts, means for adjusting said shafts relatively to the line of draft, an arm fixed transversely on the central beam intermediate of the ends of the latter, and wheel-colters pendent from the opposite ends of said arm, substantially as described. .7

6. In a disk harrow, the combination with the barrow-frame provided with a central transverse beam, of two yokes pivoted to the sides of the frame beneath the beam, shafts jonrnaled in the lower ends of the yokes, disks fixed on the shafts, an arm fixed transversely on the central beam intermediate of the ends of the latter, a pivoted hand-lever arranged transversely to the frame, a lever pivoted centrally to one end of the arm, two rods connecting said levers with the side of one of the yokes, anda rod connected at one end to the side of the otheryoke and detachably connected at its opposite end to the hand lever, and means for detaching said rod from the hand-lever and connecting it to the free end of the lever pivoted to the arm, substantially as described and for the purpose specified.

7. In a disk harrow, the harrow-frame comprising two longitudinal side beams provided at their opposite ends with tenons and two cross-beams having perforated ends loosely journaled on said tenons, in, combination with a central transverse beam loosely connected to the side beams of the frame, two yokes carried by the frame and central beam and arranged to move laterally relatively to the latter, shafts journaled in the lower ends of the yokes, and disks fixed on the shafts, substantiaily as described and for the purpose specified.

8. In a disk harrow, the harrow=frame com prising two longitudinal side beams provided at their opposite ends with tenons and two cross-beams having perforated ends loosely jonrnaled on said tenons, in combinationw'ith a central beam arranged transversely above the barrow-frame, two yokes straddling the sides of the frame, and pivot-bolts loosely passing through said sides of the frame, yokes and central beam and arranged to have a lateral movement relatively to the latter, sub= stantiaily as described.

In testimony whereof I have hereunto set my hand in presence of two subscribing witmesses WILLIAM N. ROSE.

Witnessesi A. M. REYNOLDS,

N. P. REYNOLDS. 

